Buoyancy depends on

If B = centre of buoyancy, G = centre of gravity, B1 = new centre of buoyancy when the floating body rotates by an angle θ, then the location of metacentre will be:

A

in between point B and B₁

B

at the point of intersection of axis of floating body passing through B and G and vertical line passing through B₁

C

at the point of intersection of axis of floating body passing through B and G and horizontal line passing through B₁

D

same as B₁

All objects experience a buoyancy when they are immersed in a fluid. Buoyancy is

A

a downward force

B

a downward pressure

C

an upward force

D

an upward pressure

The buoyancy depends on

A

Mass of liquid displaced

B

Viscosity of the liquid

C

Pressure of the liquid displaced

D

Depth of immersion

The buoyancy depends upon the

A

Weight of the liquid displaced

B

Pressure with which the liquid is displaced

C

Viscosity of the liquid

D

Compressibility of the liquid

Buoyancy force depends on the __________ the liquid.

A

Depth of immersion in

B

Displaced mass of

C

Surface tension of

D

Viscosity of

Assertion: A needle placed carefully on the surface of the water may float, whereas a ball of the same material will always sink. Reason: The buoyancy of an object depends both on the material and shape of the object

A

Both assertion and reason are true and the reason is the correct explanation of the assertion

B

Both assertion and reason are true but the reason is not the correct explanation of the assertion

C

Assertion is true but the reason is false

D

Assertion and reason is false

The force of buoyancy depends on the density and . . . . . . . . of the liquid displaces.

A

The direction

B

Volume

C

Power

D

Energy

What is the magnitude of buoyancy force depends on?

A

The mass

B

The density

C

Temperature

D

Volume

Which of the following factors depends on the result of buoyancy force acting on the object in a given fluid?

A

The density of the fluid and the mass of the object immersed in it

B

The weight of immersed object

C

The density of the fluid and the volume of the object immersed in it

D

Size of immersed object

If the amplitude or oscillation of a simple pendulum is very small, then its time period of oscillation
1. depends on the length of the pendulum, L.
2. depends on the acceleration due to gravity, g.
3. depends upon the mass of the bob of the pendulum, m.
4. does not depend upon the amplitude of the pendulum, A.
Select the correct answer:

A

1, 2 and 3

B

1, 2 and 4

C

2, 3 and 4

D

1 and 4

Buoyancy depends on

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